Bash

When running a bash script, it’s sometimes convenient to get a fully qualified path to the directory that the source of the running script is in.

I continually have to remind myself of the exact syntax for this tip, so I’ve posted it for posterity. This approach should work around most issues of symlinked files, sourced files, etc.

I have a useful script that demonstrates a few different bash techniques.

This script:

• Executes multiple commands on multiple SSH client hosts
• Connects to each host in parallel, and waits for all host processes to terminate
• As a freebie, demonstrates running apt in a non-interactive process